Nelitjs h



(No Model.)

T. J. RIDER.

AIRGHAMBER FOR PUMPS, &c.

No. 861,649. Patented Apr. 19, 1887 v/III/IIIIIIIIIIIMI'IIIIIIII/IIIIII' N, PEYERS. PhMO-Uflmgrapher, Washingion. D. C.

UNITED STATES PATENT OFFICE.

THOMAS J. RIDER, OF NEWV YORK, N. Y., ASSIGNOR OF ONE-HALF TO COR- NELIUSH. DE LAMATER, GEORGE H. 'ROBINSON, AND WILLIAM DE LA- MATER, ALL OF SAME PLACE.

AIR-CHAMBER FOR PUMPS, 86C.

SPECIFICATION forming part of Letters Patent No. 361,649, dated April 19, 1887.

Application filed August 14, 1886. Serial No. 210,874. (No modcLl To allwhom it may concern:

Be it known that I, THOMAS J. RIDER, of the city and county of New York, in the State of New York, have invented a new and useful Improvementin Air-Chambers for Pumps and other Purposes,of which the following is aspecification.

My invention relates to those air-chambers in which the inlet-passage for water at the to bottom of the air-chamber is prolonged upward by means of a pipe extending into the upper part of the air-chamber, while the outlet-passage leading from the air-chamber is at or near the bottom thereof. Such a construction of air-chamber is desirable, because the water is compelled to pass directly upward into the air-chamber, which it sometimes will not do when it flows swiftly past the inletopening provided at the bottom of an ordi 2O nary air-chamber, and is further desirable because ample opportunity is afforded for the ready separation of air from the water and the air-chamber will be maintained charged with air.

In the accompanying drawings, Figure 1 represents a vertical section of an air-chamber embodying my invention, and which may be either placed upon the end of an upright pipe or placed in a horizontal line of pipe;

and Fig. 2 is a plan view of the base portion of such air-chamber. u

Similar letters of reference designate corresponding parts in all the figures.

A designates a base piece or portion, which 3 5 may be of cast metal, and which is surmounted by a body portion, B, constituting the airchamber proper. The base portion and body portion A B are both represented as made of cast metal, and are united by a screw-threaded 0 joint, I); but may be united in any other suitable manner. In this example of my invention the base-piece A in reality constitutes a plug of special construction, which is screwed into the body portion B.

In the base-piece A is an inlet-passage, c, from which a pipe, 0, extends upward into the air-chamber B to a suitable distance above its bottom, and at the side of the inlet-passage c, and entirely independent thereof, is an outlet-passage, d, also constructed in the base-piece, and which, as shown in Fig. 2, may partly surround the inlet-passage c. The passages c d are both below the point of attachment of the body B to the base portion, and the discharge dis in open communication with the body, while the pipe 0 affords the only communication between the inlet-passage c and the body.

I have represented the inlet-passage c as constructed withinlet-openings or pipe-sockets 0 both in its side and bottom,-and w1th either of which a supply-pipe, D, may be connected; and I have also shown the outlet or delivery passage d as provided with a similar sideopening or pipe-socket, (1, into which is inserted an outlet-pipe, D.

As shown in the drawings, the air-chamber is designed for use in a horizontal line of p pe, and the pipe portions D D are both in line, the pipe portion D communicating with the side opening or pipe-socket c of the 1n letpassage 0, and the bottom opening or pipesocket 0 being closed by a plug, 0".

The water entering through the pipe D flows in the direction of the arrow through the inlet-passage c, and upward through the yertical pipe 0, being discharged directly into the body B of the air-chamber, and such water passes from the bottom of the air-chamber through the outlet-passage d and the pipe D.

The airchamber might be used either for pressure purposes or as a vacuum-chamber, communicating with the suction of the pump, and in the latter case thepipe D would lead directly to the watersupply, while the pipe 85 D would communicate with the suction of the pump.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is

The combination, in an air-chamber, of the body portion 13, a cast-metal base portion, A, screwed into the body portion and having the novel construction herein described, said base portion being formed with cored passages c d below the point of attachment of the body portion, and arranged side by side, the passage 0 serving for the inlet of Water and havportion and forming the sole communication 7 ing one or more inlet-openings c, and the pasbetween the inlet-passage c and the body porsage d serving as an outlet-passage and hav- Mom-substantially as herein described.

ing open communication with the body Band THOMAS J. RIDER. the outlet-opening d, and the pipe 0, made Witnesses: separate from the base portion and extending G. G. CAPES,

upward from the base portion into the body HARRY F. LYTLE. 

